Yonex precision MAVIS Nylon shuttlecocks are the closest you can get to natural feather shuttles. Designed to have the same flight time as a feather shuttle, they give an accurate and durable performance with a traditional feel.
The WING RIB design utilizes airflow through the shuttlecock to restore shape quickly on impact. Based on flight dynamics, this original design grants stable flight, contrary to conventional models that restores shape via stiff construction.
The hardness of the skirt - the feather part of the nylon shuttlecock - varies depending on temperature.